S.W.
I have used a variety of seats from Britax, Recaro, and a few others. My favorite is the Sunshine Kids - I have three of the Radian 80 for my boys aged 2.5 and 4. (Two in one car and one along with a Recaro in the second. I would have 4 but we had already bought the Recaro.) They are terrific, easy to install, slim, so I can fit them next to each other and easy for them to climb into. They feel like it is a real seat and is very comfortable. They are expensive, but really, you will use it for years so it is pretty cheap per use. They also have remained nice looking and I have used a two of them for two+ years. The other bonus is that my 4 year old is still sitting in a 5 point harness instead of a booster.